@Article{Herlihy87b,
  author = 	 {M.P. Herlihy},
  title = 	 {Extending multiversion timestamping protocols to exploit type
  information},
  journal = 	 {IEEE Transactions on Computers},
  year = 	 1987,
  volume =	 {C-35},
  number =	 4,
  pages =	 {443--449},
  month =	 apr
}